Finding the Fourth Proportional to 2,618.69, 3,617.05 and 1,958.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618.69 : 3,617.05 = 1,958.54 : x
2. Step 2: Convert to fraction form
   2,618.69/3,617.05 = 1,958.54/x
3. Step 3: Cross multiply
   2,618.69x = 3,617.05 × 1,958.54
4. Step 4: Simplify right side
   2,618.69x = 7,084,141.25
5. Step 5: Solve for x
   x = 7,084,141.25/2,618.69
6. Step 6: Final answer
   x = 2,705.22